TWI798607B - Nozzle part and robot cleaner including the same - Google Patents

Abstract

A nozzle part and a robot cleaner including the same are disclosed. A nozzle part according to various embodiments of the present disclosure may include a main brush for collecting trash such as fur and a sub-brush for separating trash such as fur adhered to the main brush. The sub-brush is provided with various members according to embodiments to separate trash such as fur adhered to the main brush. Therefore, trash such as fur may be easily separated and collected. As a result, user's convenience may be improved.

Description

Nozzle part and cleaning robot including the nozzle part

The present invention relates to a suction nozzle and a cleaning robot including the suction nozzle, more particularly, to a suction nozzle with a structure capable of effectively collecting substances that are easily adhered but not easily separated, such as hair or fibers part, and a cleaning robot including the nozzle part.

A cleaning robot refers to a device that can independently perform cleaning operations according to a preset method without manual operation by the user. The cleaning robot can have preset operation time and operation method.

The cleaning robot provides various conveniences, for example, the user does not need to perform cleaning directly, and the operation mode and operation time can be arbitrarily set. Therefore, in recent years, the demand for cleaning robots has increased.

The cleaning robot travels indoors according to a preset method and sucks in dust, small rubbish or the like present on the floor. To this end, the cleaning robot includes a motor forming an attraction force, a dust container for storing sucked dust or small garbage, and a filter for purifying and discharging air sucked into the dust container.

Garbage collected by cleaning robots can take many forms. For example, trash may include hair that has fallen from a human body, fiber strands separated from clothing, and the like.

Families with companion animals are increasing as family formations such as one-person households tend to decrease in number of members. Incidentally, companion animals are more likely to shed hair than humans in the above situations.

The aforementioned litter such as hair, fiber strands or companion animal hair has the property of easily sticking to objects with rough surfaces by electrostatic attraction. Meanwhile, garbage has the property of not being easily separated from the surface of the adhered object.

Therefore, in daily life, when garbage adheres to fibers made of such as blankets or carpets When the surface of the object is made of material, it is not easy to separate it. Even when collecting trash while doing chores, or when the robot travels over surfaces like blankets or rugs, it can be difficult to separate the trash from the cleaning robot.

Therefore, not only the user's convenience is deteriorated, but also there is a concern that the cleaning robot may break down or be damaged due to the garbage adhering to the cleaning robot.

Korean Patent Document No. 10-1981827 discloses a cleaning device for a suction nozzle of a vacuum cleaner. More specifically, it discloses a cleaning device for a nozzle of a vacuum cleaner, comprising: a socket for receiving the nozzle of a vacuum cleaner, and a cleaning member disposed in the socket to remove entanglements while the rotatable member rotates Items attached to it.

However, such a cleaning device for a nozzle of a vacuum cleaner is provided in a charging stand for charging the vacuum cleaner. Therefore, it is inconvenient that the user has to place the vacuum cleaner on the charging stand, and then operate the vacuum cleaner again after finishing using the vacuum cleaner.

Korean Patent Publication No. 10-2020-0028580 discloses a pet comb capable of sucking hair and a vacuum cleaner including the pet comb. Specifically, it discloses a pet comb and a vacuum cleaner including the pet comb. The pet comb includes a roller comb part for combing pet hair inside a main body casing, and a rake part for removing hair stuck in the roller comb part.

However, such pet combs and vacuum cleaners incorporating pet combs have limitations in that their use is only suitable for portable vacuum cleaners other than cleaning robots or larger vacuum cleaners.

In addition, since both the roller comb portion and the rake portion are provided in a rake shape, there is a limitation that it is difficult to remove hair tangled in each rake.

[Prior Technical Document]

[Patent Document]

Korean Patent No. 10-1981827 (May 23, 2019);

Korean Patent Publication No. 10-2020-0028580 (April 8, 2020).

One aspect of the present invention is to provide a nozzle unit having a structure capable of solving the above problems, and a cleaning robot including the nozzle unit.

First, one aspect of the present invention is to provide a suction nozzle with a structure capable of easily collecting garbage scattered in the room in the form of hair or fibers, and a cleaning machine including the suction nozzle. robots.

Furthermore, one aspect of the present invention is to provide a suction nozzle having a structure capable of easily capturing garbage collected in the form of hair or fibers, and a cleaning robot including the suction nozzle.

Furthermore, one aspect of the present invention is to provide a nozzle unit having a structure capable of easily discharging waste in the form of hair or fibers, and a structure of a cleaning robot including the nozzle unit.

In addition, an aspect of the present invention is to provide a nozzle unit and a cleaning robot including the nozzle unit, which have a structure capable of minimizing the number of components for powering components for achieving the above object.

Furthermore, one aspect of the present invention is to provide a nozzle unit having a structure capable of simplifying components for achieving the above object, and a cleaning robot including the nozzle unit.

In addition, an aspect of the present invention is to provide a nozzle unit having a structure applicable to other types of cleaning robots and achieving the above object, and a cleaning robot including the nozzle unit.

In order to achieve the above object, the present invention provides a suction nozzle portion comprising: a frame; a main brush rotatably coupled to the frame to extend in one direction; and a secondary brush positioned adjacent to the main brush to extend along the The one direction extends and is rotatably coupled to the frame with respect to the main brush, wherein the main brush includes: an adhesive member surrounding the outer circumference of the main brush to which garbage such as hair is adhered, and a sub-brush positioned on the main brush a downstream side of the rotation direction, and adheres the attached garbage such as hair to the adhesive member, then moves a predetermined distance in an outer circumferential direction of the main brush, and then comes into contact with the sub brush, and the main brush and the sub brush rotate in opposite directions .

In addition, the sub brush may define an outer circumference of the sub brush, and may include a sub outer circumferential surface configured to have a roughness smaller than that of the bonding member.

In addition, a plurality of sub-brushes may be provided and positioned adjacent to each other, and separated from the adhesive member when attached dirt such as hair passes between the plurality of sub-brushes.

In addition, the sub-brush may include a protruding member provided to protrude from an outer circumferential surface of the sub-brush to separate attached waste such as hair from the adhesive member.

In addition, a plurality of protruding members may be defined, and the plurality of protruding members are spaced apart from each other and arranged in parallel along the one direction, and a plurality of rows defined by arranging the plurality of protruding members in parallel along the one direction may be defined. The brushes are spaced apart from each other in a circumferential direction.

In addition, for each of the rows defined by the plurality of protruding members adjacent to each other The rows, the protruding members and the spaces in which the protruding members are spaced apart from each other may be alternately arranged along a circumferential direction of the sub brush.

In addition, a plurality of sub brushes may be provided, and the plurality of sub brushes are positioned adjacent to each other, and the protruding member provided on any one of the plurality of sub brushes is inserted into the protruding member adjacent to the other of the plurality of sub brushes in spaces separated from each other.

In addition, a sectional area of the protruding member may be defined to decrease in a direction opposite to the outer circumferential surface of the sub brush.

In addition, the sub brush may include a plurality of blade members extending in the one direction, radially inner end portions thereof being connected to each other, and radially outer end portions thereof being exposed to the outside.

Furthermore, the blade member may include at least one bent portion in the one direction.

In addition, the suction nozzle part may include: a main gear coupled to the main brush to rotate together with the main brush; and a sub gear coupled to the sub brush and geared with the main gear.

In addition, the main gear and the auxiliary gear may include: a tooth portion in which a plurality of convex portions and a plurality of concave portions are alternately arranged along an outer circumference of the tooth portion, and the tooth portion of the main gear may include more teeth than the tooth portion of the auxiliary gear. Many convex and concave parts.

In addition, the present invention provides a cleaning robot, comprising: a main body; a dust container detachably connected to the main body and defining a space therein; a suction nozzle housing detachably connected to the main body, the suction nozzle An inner space of the housing communicates with the space of the dust container; and a suction nozzle part is rotatably accommodated in the suction nozzle housing and partially exposed to an outside of the suction nozzle housing, wherein the suction nozzle part includes: a a frame, connected to the nozzle housing; a main brush, rotatably connected to the frame to extend in one direction; and a secondary brush, located adjacent to the main brush and extending in the one direction, and opposite to the The main brush is rotatably coupled to the frame, and wherein the main brush includes: an adhesive member around an outer circumference of the main brush to which garbage such as hair is adhered, and the sub-brush is located on a downstream side of the rotation direction of the main brush and will Attached debris such as hair adheres to the adhesive member, then moves a predetermined distance in an outer circumferential direction of the main brush, and then contacts the sub brush, and the main brush and the sub brush rotate in opposite directions.

In addition, the suction nozzle part of the cleaning robot may include a main gear connected to the main brush to rotate together with the main brush; a sub-gear connected to the sub-brush and rotated together with the sub-brush, and the gear is connected to the main gear; and a a power supply part connected to the main brush and rotated to rotate the main brush, wherein the number of recesses and protrusions arranged in the main gear is defined to be greater than the number of recesses and protrusions arranged in the sub gear Quantity, and when the power unit rotates, the secondary brush rotates faster than the main brush.

In addition, the sub-brush of the suction nozzle part of the cleaning robot may include: a pair of outer circumferences defining an outer circumference of the sub-brush and having a roughness smaller than that of the adhesive member, and a plurality of sub-brushes may be provided, and the plurality of sub-brush The brushes can be positioned adjacent to each other, and can be separated from the adhesive member when attached debris such as hair passes between the plurality of sub-brushes.

In addition, the suction nozzle portion of the cleaning robot may include a protruding member provided to protrude from an outer circumferential surface of the sub-brush to separate attached garbage such as hair from the adhesive member, wherein a plurality of protruding members are defined, and the plurality of protruding members Spaced apart from each other and arranged in parallel in the one direction, and a plurality of rows defined by arranging the plurality of protruding members in parallel in the one direction are spaced apart from each other in a circumferential direction of the sub-brush.

The suction nozzle portion of the cleaning robot may include a plurality of blade members extending along the one direction, the radially inner ends thereof are connected to each other, and the radially outer ends thereof are exposed to the outside, wherein the blade members include blade members along the one direction. at least one bend.

According to an embodiment of the present invention, the following effects can be achieved.

First, the main brush is provided in the nozzle portion. The main brush extends in one direction, and is provided on its outer circumference with an adhesive member made of a material such as felt with high roughness. In other words, the adhesive member constitutes the outer circumferential surface of the main brush. The main brush is partially exposed to the outside of the nozzle housing.

When operating the cleaning robot, the adhesive member rolls along the floor surface to be cleaned. Due to the characteristics of the material of the adhesive member and its shape, garbage such as hair remaining on the floor surface is easily adhered to the adhesive member.

Therefore, it is possible to easily collect garbage such as hair that exists in an area through which the cleaning robot is driven.

In addition, the nozzle part according to various embodiments is provided with a member for separating waste such as hair attached thereto. The suction nozzle part is provided with a secondary brush which rotates at a higher speed in the opposite direction to the main brush provided with the adhesive member.

In one embodiment, a secondary outer circumferential surface having a roughness smaller than that of the bonding member is defined on the secondary brush. Rubbish such as hair attached to the adhesive member is pressed by the sub-outer peripheral surface and separated from the adhesive member.

In another embodiment, the sub brush is provided with a protruding member protruding from an outer circumferential surface thereof. Rubbish such as hair adhering to the adhesive member is captured by the protruding member and separated from the adhesive member.

In yet another embodiment, the secondary brush is provided with blade members. Rubbish such as hair adhering to the adhesive member is swept away by the blade member and separated from the adhesive member.

Therefore, the collected garbage such as hair can be easily collected in the dust container through the inner space of the nozzle housing and the main body without any additional operation.

In addition, the dust container is detachably attached to the main body. The inner space of the dust container communicates with the inner space of the main body. Through the above process, garbage such as hair scattered on the floor surface is collected, then moved and accommodated in the dust container.

Therefore, the user can separate only the dust container to easily discharge collected garbage such as hair.

Additionally, the main gear is linked to the main brush. The main gear is gear-linked to a secondary gear located radially outward of the main brush. The secondary gear is linked to the secondary brush.

When the power unit operates, the main brush and the main gear rotate together. The sub-gear and sub-brush, which are connected to the sub-brush, also rotate.

Therefore, when the main brush is rotated by a single power supply unit, the sub brushes adjacent to the main brush can also be rotated. Therefore, the amount of power required to rotate the main brush and the sub brush can be minimized.

Also, with the foregoing configuration, the main brush and the sub brush can be simultaneously rotated by a single power supply portion. Therefore, the structure of the suction nozzle part can be defined easily.

In addition, a nozzle case accommodating the nozzle portion is detachably coupled to the main body portion. Therefore, the aforementioned effects can be achieved only by separating the nozzle housing from the main body and connecting it to the main body of another cleaning robot.

Therefore, the versatility of the nozzle unit can be improved. In addition, the user can purchase the suction nozzle unit separately and use it for the previously used cleaning robot without purchasing the entire cleaning robot. As a result, user convenience and economy can be improved.

1: Cleaning robot

10: Main body

20: Drive Department

30: Dust container

40: Sensor part

50: Nozzle housing

51: Outer shell

52: Inner shell

53: Connecting Department

100,200,300: nozzle part

110, 210, 310: frame

111: lower frame

112: side frame

120,220,320: main brush

121,221,321: Adhesive components

122: Main rotation axis

130,230,330: Secondary brushes

331: blade components

331a: first blade member

331b: second blade member

130a, 230a, 330a: the first pair of brushes

130b, 230b, 330b: the second pair of brushes

231:Prominent components

231a: first protruding member

231b: second protruding member

131: Secondary outer peripheral surface

131a: the first secondary outer peripheral surface

131b: the second secondary outer peripheral surface

132a: the first auxiliary rotating shaft

132b: the second secondary rotation axis

132: Secondary rotating shaft

140,240,340: gear department

141: Main gear

141a: the first main gear

141b: second main gear

142,242,342: pinion gear

142a: first pinion

142b: second secondary gear

150,250,350: Power supply department

212,312: Support frame

G: floor surface

H: Garbage

FIG. 1 is a perspective view illustrating a cleaning robot according to an embodiment of the present invention.

FIG. 2 is a perspective view illustrating a nozzle housing provided in the cleaning robot of FIG. 1 .

FIG. 3 is a perspective view showing a nozzle part accommodated in the nozzle housing of FIG. 2 according to an embodiment of the present invention.

Fig. 4 is a bottom view illustrating the nozzle portion of Fig. 3 .

Fig. 5 is a rear view illustrating the nozzle portion of Fig. 3 .

Fig. 6 is a perspective view illustrating the nozzle part of Fig. 3 from another angle.

FIG. 7 is a perspective view showing a nozzle portion according to a modified example of the embodiment shown in FIG. 3 .

Fig. 8 is a perspective view illustrating the nozzle part of Fig. 7 from another angle.

FIG. 9 is a perspective view showing that a nozzle part according to another embodiment of the present invention is accommodated in the nozzle housing of FIG. 2 .

Fig. 10 is a perspective view showing a nozzle portion according to a modified example of the embodiment shown in Fig. 9 .

FIG. 11 is a perspective view showing that a nozzle part according to still another embodiment of the present invention is accommodated in the nozzle housing of FIG. 2 .

Fig. 12 is a perspective view showing a nozzle portion according to a modified example of the embodiment shown in Fig. 11 .

FIG. 13 is a side view showing an operation process of a main brush and a sub brush provided in a nozzle part according to various embodiments of the present invention.

14 is a side view showing the operation process of a main brush and a sub brush provided in a nozzle part according to various modification examples of various embodiments of the present invention.

FIG. 15 is a conceptual diagram showing a process of collecting garbage such as hair by a cleaning robot according to various embodiments of the present invention.

Hereinafter, the nozzle unit and the cleaning robot including the nozzle unit according to the embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the following description, descriptions of some elements may be omitted to clarify features of the present invention.

1. Definition of terms

Where an element is "connected" or "linked" to another element, it may be directly connected or linked to the other element, but it will be understood that any other elements may be present therebetween.

In contrast, when an element is referred to as being "directly connected to" another element, there are no intervening elements present.

Singular expressions used in the present invention may include plural expressions unless clearly used otherwise.

The term "dust" as used in the following description refers to the People are exposed to fine particles, dust, etc. in the indoor environment.

The term "small garbage" used in the following description refers to garbage whose size is larger than dust but can be collected by a cleaning robot.

The term "hair" as used in the following description refers to thin strands of material that have been removed from animals, including humans. Hair can be body hair that has been removed from the human body, hair on the head, or body hair that has been removed from the body of an animal.

The term "fiber" used in the following description refers to any fine thread-like material other than hair. In one embodiment, the fibers may be material that has been removed from clothing, bedding, furniture, and clutter.

In the following description, hair and fibers are collectively referred to as "hair (F) or the like".

The terms "front side", "rear side", "left side", "right side", "top side" and "bottom side" used in the following description will be understood with reference to the coordinates shown in FIG. 1 .

2. Describe the configuration of the cleaning robot 1 according to the embodiment of the present invention

Referring to FIGS. 1 and 2, a cleaning robot 1 according to an embodiment of the present invention includes a main body 10, a driving portion 20, a dust container 30, a sensor portion 40, a nozzle housing 50, and nozzle portions 100, 200, 300.

Hereinafter, each configuration of the cleaning robot 1 according to the embodiment of the present invention will be described with reference to the attached drawings, but the suction nozzle parts 100 , 200 , 300 will be described as a separate paragraph.

Description of the main body 10

The main body part 10 forms the outer shape of the cleaning robot 1 . The main body part 10 may accommodate elements for the cleaning robot 1 to perform a cleaning operation in a space accommodated therein.

The main body part 10 may collide with various obstacles provided in an area (for example, a room) where the cleaning robot 1 is driven. Therefore, the main body part 10 is preferably formed of a high-rigidity material to prevent damage due to collision.

In addition, the main body portion 10 is preferably formed of a lightweight material. This is to reduce the power required to drive the cleaning robot 1 .

In one embodiment, the main body portion 10 may be formed of synthetic resin such as reinforced plastic.

A user interface may be provided on the outside of the main body part 10 . The user can control the use of The operator interface is used to control the operation of the cleaning robot 1. In addition, the user interface can display information about the cleaning robot 1 and the state of the area where the cleaning robot 1 is driven.

The inner space of the main body part 10 may communicate with the outside. Air or small garbage collected when the cleaning robot 1 is driven can flow into the dust container 30 which is detachably connected through the inner space of the main body part 10 . In addition, air introduced together with dust or small debris may be discharged to the outside of the main body part 10 .

Various sensors may be provided in the main body portion 10 . In other words, the main body part 10 may be provided with a gyro sensor or the like for sensing the inclination of the floor surface (G) in addition to the sensor part 40 which will be described later.

In the illustrated embodiment, the main body portion 10 has a circular cross section and is provided in a disk shape having a predetermined height in the vertical direction. Therefore, when the cleaning robot 1 collides with various obstacles while being driven, the main body part 10 may be rotated and driven in various directions.

The nozzle housing 50 and the nozzle parts 100 , 200 , 300 accommodated in the nozzle housing 50 are detachably attached to the main body part 10 . The inner space of the nozzle housing 50 may communicate with the inner spaces of the main body 10 and the dust container 30 .

Therefore, garbage (H) such as hair collected by the nozzle part 100 , 200 , 300 may be introduced through the inner space of the main body part 10 and collected in the dust container 30 .

The driving part 20 is rotatably coupled to the lower side of the main body part 10 .

The drive unit 20 provides power for moving the cleaning robot 1 . In addition, the driving unit 20 rotates the cleaning robot 1 to change the driving direction.

The driving unit 20 is located on the lower side of the cleaning robot 1 . The driving part 20 is rotatably coupled to the lower side of the main body part 10 .

The drive part 20 is provided in a form capable of rotating to move forward or backward. In the illustrated embodiment, the drive portion 20 is provided in the form of a wheel.

A plurality of drive units 20 may be provided. In the illustrated embodiment, the drive portions 20 are respectively provided on the left and right sides of the lower side of the main body portion 10 . The rotational speed and the rotational direction of each driving portion 20 on each side can be controlled independently of each other.

Therefore, the cleaning robot 1 can move forward, backward, and rotate left or right.

Although not shown, the drive section 20 may be connected to a power supply device (not shown). The power supply unit (not shown) can be in the form of a motor that rotates the driving part 20 by receiving an electric signal. set up.

In one embodiment, a plurality of power supply devices (not shown in the figure) can be provided and connected to a plurality of driving parts 20 respectively. Therefore, the plurality of driving sections 20 can be controlled independently of each other.

The dust container 30 stores collected garbage when the cleaning robot 1 is driven. In one embodiment, the dust receptacle 30 may contain debris (H), such as hair.

A predetermined space is defined inside the dust container 30 . This space communicates with a space provided inside the main body portion 10 . The garbage collected through the nozzle part 100 , 200 , 300 may pass through a space provided inside the main body part 10 to enter the inside of the dust container 30 .

The dust container 30 is detachably coupled to the main body 10 . A user may release the dust container 30 from the main body part 10 to easily remove garbage contained in the dust container 30 .

The dust container 30 may be formed of a transparent material. This is to allow the user to visually recognize the amount of garbage accommodated in the dust container 30 and easily determine the discharge time of the garbage.

Alternatively, a sensor (not shown) may be provided in the dust container 30 . In one embodiment, a sensor (not shown) may sense the mass or volume of the trash contained in the inner space of the dust container 30 . The sensed mass or volume may be sent to the user in the form of visual information or auditory information, so that the user can easily recognize when the garbage is discharged.

The sensor part 40 senses information on a path on which the cleaning robot 1 drives.

The sensor part 40 may be located in a direction in which the cleaning robot 1 is to be driven. In the illustrated embodiment, the sensor part 40 is located on the front side of the main body part 10 to sense information about the environment on the front side of the cleaning robot 1 .

The sensor section 40 may be provided in any form capable of detecting information about the environment of the path along which the cleaning robot 1 is driven or will be driven. In the illustrated embodiment, the sensor unit 40 is configured as a camera capable of sensing image information.

Although not shown, the sensor part 40 may further include an infrared sensor or the like for sensing a distance to an obstacle.

The nozzle housing 50 is detachably attached to the lower side of the sensor part 40 , that is, the lower side at the front of the main body part 10 .

The nozzle housing 50 houses the nozzle units 100 , 200 , 300 . As the cleaning robot 1 is driven, the garbage collected by the nozzle parts 100 , 200 , 300 , especially garbage (H) such as hair, can be introduced into the space inside the main body 10 and the dust container 30 through the nozzle housing 50 .

The nozzle housing 50 is located on the lower side of the front part of the main body part 10 . When the driving part 20 is rotated, the lower side of the nozzle housing 50 may be in contact with the floor surface (G) or spaced apart by a predetermined distance to move together with the main body part 10 .

A space is defined inside the nozzle housing 50 . The nozzle parts 100, 200, 300 are accommodated in this space. As will be described later, the suction nozzle part 100, 200, 300 includes a frame 110, 210, 310; a main brush 120, 220, 320; . The main brushes 120 , 220 , 320 and the sub brushes 130 , 230 , 330 of the nozzle parts 100 , 200 , 300 can rotate in the inner space of the nozzle housing 50 .

The nozzle housing 50 is detachably connected to the main body 10 . When the nozzle housing 50 and the main body 10 are coupled to each other, the inner space of the nozzle housing 50 communicates with the inner space of the main body 10 . Therefore, the inner space of the nozzle housing 50 may communicate with the dust container 30 .

The nozzle housing 50 is joined to the main body part 10 and moves together, and may have any shape capable of accommodating the nozzle part 100, 200, 300 therein. In the illustrated embodiment, the nozzle housing 50 has a polygonal column shape extending in the left-right direction, and protrudes upward at different inclination angles in the front-rear direction.

The nozzle housing 50 may collide with various obstacles provided in an area (for example, a room) where the cleaning robot 1 is driven. This is because the nozzle housing 50 is coupled to the main body 10 so as to be exposed to the outside of the main body 10 . Therefore, the nozzle housing 50 is preferably formed of a high-rigidity material to prevent damage due to collision.

In addition, the nozzle housing 50 is preferably formed of a lightweight material. This is to reduce the power required to drive the cleaning robot 1 .

In one embodiment, the nozzle housing 50 may be formed of synthetic resin such as reinforced plastic.

In the illustrated embodiment, the nozzle housing 50 includes an outer housing 51 , an inner housing 52 , and a communication portion 53 .

The outer case 51 defines the outer side of the nozzle case 50 . The outer case 51 is exposed to the outside of the nozzle case 50 .

A predetermined space is defined inside the outer casing 51 . The inner case 52 and the nozzle parts 100, 200, 300 housed in the inner case 52 are accommodated in this space. This space communicates with a space provided inside the main body portion 10 . This communication is achieved by the communication portion 53 .

The inner case 52 is located inside the outer case 51 .

The inner housing 52 defines the inner side of the nozzle housing 50 . The inner case 52 is not exposed to the outside.

A space is defined inside the inner casing 52 . The nozzle parts 100, 200, 300 are accommodated in this space. The main brush 120 and the sub brush 130 of the suction nozzle part 100 , 200 , 300 may rotate while being accommodated in the inner case 52 .

The inner housing 52 may be coupled to the nozzle part 100 , 200 , 300 . Specifically, the frame 110 of the nozzle part 100 , 200 , 300 may be coupled to the inner case 52 .

The opening portion is provided on one side of the inner housing 52, the lower side in the illustrated embodiment. The nozzle parts 100 , 200 , 300 accommodated in the inner case 52 may be exposed to the outside of the inner case 52 through the opening. Therefore, when the cleaning robot 1 is driven, various garbage placed on the floor surface (G) can be collected by the suction nozzle part 100 , 200 , 300 .

A space defined inside the inner housing 52 communicates with the communication portion 53 . Various types of garbage collected by the nozzle parts 100 , 200 , 300 may pass through the communication part 53 to be introduced into the inner spaces of the main body part 10 and the dust container 30 .

The communication portion 53 communicates the inner space of the outer case 51 and the inner space of the inner case 52 with the inner space of the main body 10 .

The communication part 53 may be located in the outer casing 51 . The communication portion 53 is located on the side facing the main body portion 10, the upper side of the rear portion in the illustrated embodiment.

The communication part 53 may be detachably coupled to the main body part 10 . Through this connection, the nozzle housing 50 and the main body 10 can be detachably connected to each other.

3. Description of the nozzle part 100, 200, 300 according to various embodiments of the present invention

Referring back to FIGS. 1 and 2 , the cleaning robot 1 according to the embodiment of the present invention includes suction nozzle parts 100 , 200 , 300 .

As the cleaning robot 1 operates, the nozzle parts 100, 200, 300 rotate to collect various types of garbage on the floor surface (G) in the exposed area of the nozzle parts 100, 200, 300.

The nozzle units 100 , 200 , and 300 can move together with the movement of the cleaning robot 1 . Therefore, the suction nozzle part 100, 200, 300 can collect garbage in each area.

The nozzle part 100, 200, 300 may be housed in the nozzle housing 50 and exposed toward the floor surface (G). When driving the cleaning robot 1, the suction nozzles 100, 200, 300 are in contact with the floor surface (G) Actuated while touching or separating a predetermined distance.

The suction nozzle part 100, 200, 300 is rotatable. Accordingly, various types of garbage located on the floor surface (G) may be collected by the nozzle parts 100 , 200 , 300 and collected in the dust container 30 through the nozzle housing 50 .

In this specification, description will be made on the premise that the suction nozzle part 100, 200, 30 is rotated to collect garbage (H) such as hair.

(1) Description of the suction nozzle part 100 according to an embodiment of the present invention

Hereinafter, a nozzle part 100 according to an embodiment of the present invention and modified examples thereof will be described in detail with reference to FIGS. 2 to 8 .

In the illustrated embodiment, the nozzle part 100 includes a frame 110 , a main brush 120 , a sub brush 130 , a gear part 140 , and a power supply part 150 .

The frame 110 is a portion where the nozzle part 100 is coupled to the nozzle housing 50 . In addition, the frame 110 rotatably supports the main brush 120 and the sub brush 130 .

The frame 110 may be formed of a lightweight and highly rigid material. In one embodiment, the frame 110 may be formed of a synthetic resin material such as reinforced plastic.

The frame 110 defines a part of the outer shape of the nozzle part 100 . In the illustrated embodiment, the frame 110 defines the lower, left and right sides of the nozzle portion 100 .

In the illustrated embodiment, frame 110 includes a lower frame 111 , and side frames 112 .

The lower frame 111 defines a lower side of the frame 110 . The lower frame 111 partially surrounds the lower side of the main brush 120 .

The lower frame 111 may define a shape corresponding to that of the main brush 120 . In the illustrated embodiment, the main brush 120 has a cylindrical shape extending in the left-right direction, and the lower frame 111 may also be provided in a plate shape extending in the left-right direction.

The opening is provided inside the lower frame 111 . An opening portion may be provided to pass through upper and lower portions of the lower frame 111 . In the illustrated embodiment, a part of the lower side of the main brush 120 may be exposed to the lower side of the lower frame 111 through the opening. Accordingly, the main brush 120 may be exposed to the outside of the nozzle housing 50 .

In the illustrated embodiment, the side frames 112 are located at respective ends in both directions in which the lower frame 111 extends, and are respectively located at left and right ends.

The side frames 112 define respective ends in the lengthwise direction of the frame 110 and in the left-right direction in the illustrated embodiment. In the illustrated embodiment, the side frames 112 are coupled to ends in each direction in which the main brush 120 extends, and are coupled to left and right ends, respectively.

Of the side frames 112, the side frame 112 on the right side in the illustrated embodiment may have a through hole formed in the length direction. The power supply part 150 for rotating the gear part 140 may be coupled to the through hole to pass therethrough.

The main brush 120 and the sub brush 130 are rotatably coupled to the side frame 112 . In other words, the side frame 112 does not rotate regardless of the rotation of the main brush 120 and the sub brush 130 .

The side frame 112 may define a shape corresponding to the shape of the inner space of the nozzle housing 50 . In the illustrated embodiment, the side frame 112 is provided in a plate shape, wherein an upper end portion thereof is defined to be rounded in such a manner as to protrude toward the upper side.

The main brush 120 is rotated to collect various types of debris remaining on the floor surface (G).

The main brush 120 is rotatably coupled to the frame 110 . Specifically, both ends of the main brush 120 are rotatably supported by the plurality of side frames 112 .

The main brush 120 is disposed to extend in one direction. In the illustrated embodiment, the main brush 120 is formed to extend in left and right directions. It will be understood that this direction of extension is the same as that of the nozzle housing 50 .

Therefore, when the cleaning robot 1 moves forward, the area swept by the main brush 120 may increase. Therefore, the cleaning efficiency of the cleaning robot 1 can be improved.

The main brush 120 may have any shape rotatable between the side frames 112 . In the illustrated embodiment, the main brush 120 has a circular cross section and a cylindrical shape extending in left and right directions.

In the above-described embodiments, even when the main brush 120 rotates and advances, the distance between the center of the section and the outer circumference of the main brush 120 may be kept constant to perform an effective sweeping operation.

The sub brush 130 is positioned adjacent to the outer circumference of the main brush 120 . The main brush 120 may relatively rotate with respect to the sub brush 130 . Accordingly, garbage (H) such as hair collected by the main brush 120 may be separated, and details thereof will be described later.

In the illustrated embodiment, the main gear 141 is located on the outer circumference of each end in the direction in which the main brush 120 extends, and is located on the outer circumference of each of the left and right ends. The main gears 141 are respectively gear-coupled to sub-gears 142 located adjacent to the outer circumference of the main brush 120 .

Accordingly, when the power supply part 150 is operated to rotate the main brush 120, the main gear 141, the sub gear 142, and the sub brush 130 connected thereto are rotated. As a result, the main brush 120 and the sub brush 130 can be operated by a single power supply part 150 .

The main brush 120 may be formed of a lightweight and highly rigid material. In one embodiment, the main brush 120 may be formed of a synthetic resin material such as reinforced plastic.

An adhesive member 121 is provided on the outer circumference of the main brush 120 .

The adhesive member 121 defines an outer circumferential surface of the main brush 120 . In other words, the adhesive member 121 is disposed on the main brush 120 to surround the outer circumferential surface of the main brush 120 .

The adhesive member 121 may be formed of a material having a predetermined roughness. This is to easily collect garbage (H) such as hair staying on the floor surface (G) by frictional force and electrostatic attraction.

In addition, the adhesive member 121 may be formed of a material having a predetermined adhesive strength. This is to facilitate collection by compacting and adhering garbage (H) such as hair to the floor surface (G).

In one embodiment, the bonding member 121 may be formed from a fibrous material, such as felt, a fabric blend, flax, or bristles. Alternatively, the adhesive member 121 may be formed of a material such as rubber, latex, or acrylic.

In this case, in the illustrated embodiment, it is preferable to define the roughness of the surface of the adhesive member 121 in a direction in which the adhesive member 121 is exposed to the outside and in a direction radially outward with respect to the center of the main brush 120 to be relatively high.

When the main brush 120 and the adhesive member 121 provided therein rotate, garbage (H) such as hair on the floor surface (G) may adhere to the adhesive member 121 . Garbage (H) such as sticky hair may rotate together with the main brush 120 and the bonding member 121 and then be separated by the sub brush 130 . A detailed description thereof will be described later.

The main brush 120 rotates about a main rotational axis 122 . In other words, the main rotation shaft 122 is a part of the main brush 120 rotatably coupled to the frame 110 (ie, the side frame 112 ).

Therefore, the main rotation shaft 122 may be referred to as a main support shaft.

The main rotation shaft 122 extends in the direction in which the main brush 120 extends, in the left-right direction in the illustrated embodiment. The main rotation shaft 122 may be disposed to pass through the central axis of the main brush 120 section.

The power supply unit 150 is coupled to the main rotation shaft 122 . When the power supply part 150 rotates, the main rotation shaft 122 and the main brush 120 may rotate together.

The sub-brush 130 will adhere to the garbage of the adhesive member 121 of the main brush 120, especially Garbage (H) such as hair is separated from the adhesive member 121 . The separated adhesive member 121 may be removed to the inside of the nozzle housing 50 and moved and collected into the dust container 30 through the communication part 53 .

The sub brush 130 is located adjacent to the main brush 120 . In the illustrated embodiment, the secondary brush 130 is located on top of the primary brush 120 .

The sub brush 130 may be defined in a shape corresponding to the outer circumferential shape of the main brush 120 . In the illustrated embodiment, the main brush 120 has a cylindrical shape with a circular cross section, and the sub brush 130 may also be formed in a cylindrical shape with a circular cross section.

At this time, the diameter of the section of the sub brush 130 may be smaller than the diameter of the section of the main brush 120 . Accordingly, the rotational speeds of the sub brush 130 and the main brush 120 may be adjusted.

The sub brush 130 is located radially outside the main brush 120 .

The sub brush 130 may extend in the same direction as the main brush 120 , in the left and right directions in the illustrated embodiment. Both ends of the sub brush 130 in the extending direction thereof, left and right ends in the illustrated embodiment, may be coupled to the side frame 112 .

The sub brush 130 may be formed of a lightweight and highly rigid material. In one embodiment, the sub brush 130 may be formed of a synthetic resin material such as reinforced plastic.

The sub brush 130 may rotate in a direction different from that of the main brush 120 . This is due to the fact that the secondary gear 142 linked to the secondary brush 130 is gear-linked to the main gear 141 linked to the main brush 120 .

In addition, the rotation speed of the sub brush 130 may be faster than that of the main brush 120 . Accordingly, the sub brush 130 may quickly remove the garbage (H) such as hair collected by the main brush 120 from the radially outer side of the main brush 120 .

Such a speed difference is realized by the gear unit 140, which will be described later.

A plurality of sub brushes 130 may be provided. In other words, in the embodiment shown in FIGS. 2 to 6 , two secondary brushes 130 including a first secondary brush 130 a and a second secondary brush 130 b are provided.

In the above embodiments, the first sub-brush 130a may be located above the second sub-brush 130b.

In addition, in the embodiment shown in FIGS. 7 and 8 , a single number of sub brushes 130 is provided.

In the above embodiments, the sub brush 130 is located on the downstream side of the main brush 120 . Accordingly, it will be understood that garbage (H) such as hair remaining on the floor surface (G) adheres to the adhesive member 121 and then rotates together with the main brush 120 to approach the sub brush 130 .

The sub brush 130 includes a sub outer circumferential surface 131 , and a sub rotation shaft 132 .

The sub outer circumferential surface 131 defines the outer circumferential surface of the sub brush 130 . The sub outer circumferential surface 131 is provided to extend in the direction in which the sub brush 130 extends, in the left-right direction in the illustrated embodiment. In other words, the sub outer circumferential surface 131 may be defined as a side surface of the sub brush 130 .

The sub outer circumferential surface 131 may have low roughness. This is to remove dirt (H) such as hair adhered to the adhesive member 121 using the roller method, but to prevent it from adhering to the sub outer circumferential surface 131 again.

Garbage (H) such as hair adhered to the adhesive member 121 may be pushed by the sub brush 130 to be separated from the adhesive member 121 and removed. A detailed description thereof will be described later.

The sub brush 130 rotates around a sub rotation shaft 132 . In other words, the sub rotation shaft 132 is a part where the sub brush 130 is rotatably coupled to the frame 110 (ie, the side frame 112 ).

Therefore, the sub-rotation shaft 132 may be referred to as a sub-support shaft.

The sub rotation shaft 132 is provided to extend in the direction in which the sub brush 130 extends, in the left-right direction in the illustrated embodiment. The sub rotating shaft 132 may be disposed to pass through a central axis of a section of the sub brush 130 .

In one embodiment, the secondary brush 130 includes a first secondary brush 130a and a second secondary brush 130b, the secondary outer peripheral surface 131 and the secondary rotating shaft 132 are respectively disposed on the secondary brushes 130a, 130b.

In other words, the first sub-brush 130a may be provided with a first sub-outer circumferential surface 131a and a first sub-rotation shaft 132a. In addition, the second sub brush 130b may be provided with a second sub outer circumferential surface 131b and a second sub rotation shaft 132b.

The gear part 140 transmits the rotation of the power supply part 150 to the sub brush 130 . Therefore, both the main brush 120 and the sub brush 130 can be rotated by a single power supply part 150 . In addition, the main brush 120 and the sub-brush 130 can rotate at different speeds through the gear part 140 .

The gear part 140 is connected to the power supply part 150 . When the power supply part 150 operates, the gear part 140 may rotate.

Specifically, the gear part 140 may be coupled to the main brush 120 connected to the power supply part 150 to rotate together with the main brush 120 .

A plurality of gear parts 140 may be provided. In the illustrated embodiment, the gear portion 140 includes a main gear 141 coupled to the main brush 120 and a sub gear 142 coupled to the sub brush 130 .

The main gear 141 is linked to the main brush 120 . The main gear 141 may rotate together with the main brush 120 . In the illustrated embodiment, the main gear 141 is arranged to protrude radially outward from the outer circumference of the main brush 120 out. The main gear 141 may be provided to surround the outer circumference of the main brush 120 .

The primary gear 141 may be provided in any form capable of gearing with the secondary gear 142 .

A plurality of main gears 141 may be provided. A plurality of main gears 141 may be coupled to the main brush 120 at different positions in a direction in which the main brush 120 extends, and rotate together with the main brush 120 .

In the illustrated embodiment, the main gear 141 includes a first main gear 141a on the left side and a second main gear 141b on the right side. The first main gear 141 a is coupled to the left end of the main brush 120 . The second main gear 141b is coupled to the right end of the main brush 120 .

The main gear 141 may include a plurality of teeth. In other words, the main gear 141 may include a plurality of concave portions and a plurality of convex portions arranged alternately with each other along the outer circumference thereof.

At this time, the number of recesses and protrusions provided in the main gear 141 may be greater than the number of recesses and protrusions provided in the sub gear 142 .

Therefore, when the power supply part 150 rotates, the rotation of the main gear 141 is slower than the rotation of the sub gear 142 . In other words, the number of rotations of the main gear 141 is smaller than the number of rotations of the auxiliary gear 142 for a predetermined period of time.

Therefore, when the power supply part 150 rotates, the main brush 120 connected to the main gear 141 rotates slower than the sub brush 130 connected to the sub gear 142 .

The secondary gear 142 is gear-coupled to the primary gear 141 . When the main gear 141 rotates, the sub gear 142 gear-coupled to the main gear 141 also rotates. At this time, the pinion gear 142 rotates in a direction opposite to that of the main gear 141 .

In addition, as described above, the rotation speed of the pinion gear 142 is faster than the rotation speed of the main gear 141 .

The secondary gear 142 may be provided in any form capable of gearing with the primary gear 141 .

The pinion gear 142 may be provided in a plurality of positions. In each position, a secondary gear 142 may be geared to each primary gear 141 .

In the illustrated embodiment, the secondary gears 142 are respectively disposed at the left end and the right end of the secondary brush 130 . Each secondary gear 142 is respectively gear-connected to the first main gear 141a and the second main gear 141b.

A plurality of pinion gears 142 may be provided. The plurality of auxiliary gears 142 can be respectively gear-connected to the first main gear 141a and the second main gear 141b. In other words, the plurality of secondary gears 142 are gear-coupled to the first main gear 141a. Likewise, a plurality of secondary gears 142 are gear-coupled to the second primary gear 141b.

In the embodiment shown in FIGS. 3 to 6 , the pinion gear 142 includes a first pinion gear 142 a and a second pinion gear 142 b. The first sub-gear 142a is located at each end in the extending direction of the first sub-brush 130a.

In other words, a plurality of first pinion gears 142a are provided. The plurality of first sub-gears 142a are respectively gear-connected to the first main gear 141a and the second main gear 141b.

The second sub-gear 142b is located at each end in the extending direction of the second sub-brush 130b.

In other words, a plurality of second pinion gears 142b are provided. The plurality of second sub-gears 142b are respectively gear-connected to the first main gear 141a and the second main gear 141b.

In other words, it will be appreciated that in embodiments where a plurality of secondary brushes 130 are provided, a plurality of secondary gears 142 are provided.

The pinion gear 142 may include a plurality of teeth. In other words, the pinion gear 142 may include a plurality of concave portions and a plurality of convex portions arranged alternately with each other along the outer circumference thereof.

At this time, the number of the plurality of recesses and the plurality of protrusions provided in the auxiliary gear 142 may be less than the number of the plurality of recesses and the plurality of protrusions provided in the main gear 141 .

In addition, as described above, therefore, the rotation speed of the pinion gear 142 is defined to be faster than the rotation speed of the main gear 141 .

The power supply unit 150 generates power for rotating the main brush 120 and the sub brush 130 . The power supply part 150 is connected to the main gear 141 of the gear part 140 . The power supply part 150 and the main gear 141 may rotate together.

The power supply part 150 may be provided in any form capable of controlling its rotation or non-rotation, rotation direction and rotation speed, and the like by input of electric signals. In one embodiment, the power supply part 150 may be provided with an electric motor.

The power supply unit 150 is electrically connected to an external power supply (not shown in the figure) and a controller (not shown in the figure). Power for operating the power supply part 150 may be supplied from a power supply (not shown). In addition, control signals for controlling rotation or non-rotation, rotation direction and rotation speed, and the like of the power supply part 150 may be applied from a controller (not shown).

The power supply part 150 is connected to the main brush 120 . When the power supply part 150 operates, the main brush 120 may rotate. Therefore, the main gear 141 coupled to the main brush 120 may also rotate. As a result, the sub-gear 142 coupled to the main gear 141 and the sub-brush 130 coupled thereto may also rotate.

The power supply unit 150 may be located adjacent to any one of the first main gear 141a and the second main gear 141b. In the illustrated embodiment, an odd number of power supply parts 150 are provided adjacent to the second main gear 141b on the right side.

The power supply part 150 may be coupled to the side frame 112 of the frame 110 . Therefore, the power supply part 150 can be stably supported.

A detailed description of a process of rotating the main brush 120 and the sub brush 130 with the operation of the power supply part 150 will be described later.

The nozzle part 200 according to another embodiment of the present invention is described

Hereinafter, a nozzle part 200 according to another embodiment of the present invention and modified examples thereof will be described in detail with reference to FIGS. 9 to 10 .

In the illustrated embodiment, the nozzle part 200 includes a frame 210 , a main brush 220 , a sub brush 230 , a gear part 240 , and a power supply part 250 .

The nozzle part 200 according to the present embodiment differs from the nozzle part 100 according to the previous embodiment in the structure and shape of the sub brush 230 .

In other words, according to the structure and function of the frame 210, the main brush 220, the gear part 240 and the power supply part 250 of the suction nozzle part 200 of the present embodiment and the frame 110 of the suction nozzle part 100, the main brush 120, the gear part 140 and the power supply part 150 and have the same effect.

Therefore, the description of the frame 210 , the main brush 220 , the gear part 240 and the power supply part 250 will be replaced by the description of the frame 110 , the main brush 120 , the gear part 140 and the power supply part 150 according to the foregoing embodiment.

In addition, in the following description, the nozzle part 200 according to the present embodiment will be described in detail around the sub brush 230 according to the present embodiment.

The sub brush 230 separates garbage, particularly, garbage (H) such as hair, adhered to the adhesive member 221 of the main brush 220 from the adhesive member 221 . The separated adhesive member 221 may be removed to the inside of the nozzle housing 50 and moved and collected into the dust container 30 through the communication part 53 .

The sub brush 230 is located adjacent to the main brush 220 . In the illustrated embodiment, the secondary brush 230 is located on top of the primary brush 220 .

The sub brush 230 may be defined in a shape corresponding to the shape of the outer circumference of the main brush 220 . In the illustrated embodiment, the main brush 220 has a cylindrical shape with a circular cross section, and the sub brush 230 may also be formed in a cylindrical shape with a circular cross section.

At this time, the diameter of the section of the sub brush 230 may be smaller than the diameter of the section of the main brush 220 . Accordingly, the rotational speeds of the sub brush 230 and the main brush 220 may be adjusted.

The sub brush 230 is located radially outside the main brush 220 .

The sub brush 230 may extend in the same direction as the main brush 220 , in the left and right directions in the illustrated embodiment. The secondary brushes 230 may respectively have brushes connected to the support frame 212 in the direction of its extension. The two upward ends and, in the embodiment shown, the left and right ends.

The sub brush 230 may be formed of a lightweight and highly rigid material. In one embodiment, the sub brush 230 may be formed of a synthetic resin material such as reinforced plastic.

The sub brush 230 may rotate in a direction different from that of the main brush 220 . This is due to the fact that the secondary gear 242 linked to the secondary brush 230 is gear-linked to the main gear 241 linked to the main brush 220 .

In addition, the rotation speed of the sub brush 230 may be faster than that of the main brush 220 . Therefore, the sub brush 230 may quickly remove the garbage (H) such as hair collected by the main brush 220 from the radially outer side of the main brush 220 .

The speed difference is achieved by the gear portion 240 as described above.

A plurality of sub brushes 230 may be provided. In other words, in the embodiment shown in FIG. 9 , two secondary brushes 230 including a first secondary brush 230 a and a second secondary brush 230 b are provided.

In the above embodiments, the first sub-brush 230a may be located above the second sub-brush 230b.

In addition, in the embodiment shown in FIG. 10, a single number of sub brushes 230 is provided.

In the above embodiments, the sub brush 230 is located on the downstream side of the main brush 220 . Accordingly, it will be understood that garbage (H) such as hair remaining on the floor surface (G) adheres to the adhesive member 221 and then rotates together with the main brush 220 to approach the sub brush 230 .

The sub brush 230 includes a protruding member 231 .

The protruding member 231 separates garbage (H) such as hair adhered to the adhesive member 221 of the main brush 220 . Protruding members 231 are formed on the outer circumference of the sub brush 230 .

The protruding member 231 is provided to protrude radially outward from the outer circumference of the sub brush 230 . In the illustrated embodiment, the protruding member 231 has a frustoconical shape whose radius decreases in a direction opposite to the outer circumference of the secondary brush 230 .

Alternatively, the protruding member 231 may be shaped to have the same cross-sectional area from the outer circumference of the sub brush 230 to the radially outer side. In another embodiment, the shape of the protruding member 231 may have a truncated cone shape whose radius decreases from the outer circumference of the sub brush 230 toward the radially outer side.

A plurality of protruding members 231 may be provided. A plurality of protruding members 231 may be spaced apart from each other and disposed in parallel in a direction in which the sub brush 230 extends and in a left and right direction in the illustrated embodiment.

The protruding members 231 may be arranged along a plurality of rows. Specifically, in the illustrated embodiment, the protruding members 231 may be spaced apart from each other in the circumferential direction of the sub brush 230 and arranged in parallel to each other.

In other words, when any one of a group of protruding members 231 arranged in parallel in the direction in which the sub brush 230 extends is referred to as a row, each row is arranged to be spaced apart from each other in the circumferential direction on the outer peripheral surface of the sub brush 230 .

At this time, the protruding members 231 arranged in rows adjacent to each other may be alternately arranged in the circumferential direction. In other words, the space where the protruding member 231 is not provided is located adjacent to the protruding member 231 located in any one row in the circumferential direction thereof.

Therefore, by the protruding members 231 and the space defined between the protruding members 231 , garbage (H) such as hair adhered to the adhesive member 221 can be effectively separated.

A protruding member 231 may be provided on each of the sub brushes 230a, 230b. In other words, the protruding member 231 includes a first protruding member 231a disposed on the first sub-brush 230a; and a second protruding member 231b disposed on the second sub-brush 230b.

In one embodiment, in which the sub brush 230 includes a first sub brush 230a and a second sub brush 230b, the first protruding member 231a and the second protruding member 231b may be arranged to engage with each other.

Specifically, the first sub-brush 230a and the second sub-brush 230b are disposed adjacent to each other.

When the first sub-brush 230a and the second sub-brush 230b rotate, the first protruding member 231a may be inserted into a space disposed between the second protruding members 231b. Likewise, the second protruding members 231b may be inserted into spaces disposed between the first protruding members 231a.

Therefore, the first protruding member 231a and the second protruding member 231b may not affect the rotation of each sub brush 230a, 230b. Accordingly, each of the sub brushes 230a, 230b rotates efficiently, and can effectively separate garbage (H) such as hair adhered to the adhesive member 321 .

Describe the suction nozzle part 300 according to still another embodiment of the present invention

Hereinafter, a nozzle part 300 according to yet another embodiment of the present invention and a modified example thereof will be described in detail with reference to FIGS. 11 to 12 .

In the illustrated embodiment, the nozzle part 300 includes a frame 310 , a main brush 320 , a sub brush 330 , a gear part 340 , and a power supply part 350 .

The nozzle part 300 according to the present embodiment differs from the nozzle parts 100 , 200 according to the previous embodiments in the structure and shape of the sub brush 330 .

In other words, the frames 110, 210, main brushes 120, 220, gears 140, 240, and power supply of the nozzle unit 100 are different from the frame 310, the main brush 320, the gear unit 340, and the power supply unit 350 of the nozzle unit 300 according to the present embodiment. The structures, functions and effects of the parts 150 and 250 are the same.

Therefore, the description of the frame 310, the main brush 320, the gear part 340, and the power supply part 350 will be replaced by the description of the frames 110, 210, the main brushes 120, 220, the gear parts 140, 240 and the power supply part 150, 250 according to the previous embodiment. .

In addition, in the following description, the nozzle part 300 according to the present embodiment will be described in detail around the sub brush 330 according to the present embodiment.

The sub brush 330 separates garbage, particularly garbage (H) such as hair, adhered to the adhesive member 321 of the main brush 320 from the adhesive member 321 . The separated adhesive member 321 may be removed to the inside of the nozzle housing 50 and moved and collected into the dust container 30 through the communication part 53 .

The sub brush 330 is located adjacent to the main brush 320 . In the illustrated embodiment, the secondary brush 330 is located on top of the primary brush 320 .

The sub brush 330 may be defined in a shape corresponding to the shape of the outer circumference of the main brush 320 . In the illustrated embodiment, the main brush 320 has a cylindrical shape with a circular cross section, and the sub brush 330 may also be formed in a cylindrical shape with a circular cross section.

However, a section of the sub brush 330 according to the present embodiment may be defined as a circle having a virtual section extending its outer circumference in addition to the entire circle.

At this time, the diameter of the section of the sub brush 330 may be smaller than the diameter of the section of the main brush 320 . Accordingly, the rotational speeds of the sub brush 330 and the main brush 320 may be adjusted.

The sub brush 330 is located radially outside the main brush 320 .

The sub brush 330 may extend in the same direction as the main brush 320 , in the left and right directions in the illustrated embodiment. The sub brush 330 may have both end portions in the extending direction thereof coupled to the support frame 312 and left and right end portions in the illustrated embodiment, respectively.

The sub brush 330 may be formed of a lightweight and highly rigid material. In one embodiment, the sub brush 330 may be formed of a synthetic resin material such as reinforced plastic.

The sub brush 330 may rotate in a direction different from that of the main brush 320 . This is due to the fact that the secondary gear 342 linked to the secondary brush 330 is gear-linked to the main gear 341 linked to the main brush 320 .

In addition, the rotation speed of the sub-brush 330 may be faster than the rotation speed of the main brush 320. quick. Accordingly, the sub brush 330 may quickly remove the garbage (H) such as hair collected by the main brush 320 from the radially outer side of the main brush 320 .

The speed difference is achieved by the gear portion 340 as described above.

A plurality of sub brushes 330 may be provided. In other words, in the embodiment shown in FIG. 11 , two secondary brushes 330 including a first secondary brush 330 a and a second secondary brush 330 b are provided.

In the above embodiments, the first sub-brush 330a may be located above the second sub-brush 330b.

In addition, in the embodiment shown in FIG. 12, a single number of sub brushes 330 is provided.

In the above embodiments, the sub brush 330 is located on the downstream side of the main brush 320 . Accordingly, it will be understood that garbage (H) such as hair remaining on the floor surface (G) adheres to the adhesive member 321 and then rotates together with the main brush 320 to approach the sub brush 330 .

In the illustrated embodiment, the secondary brush 330 includes a blade member 331 .

The blade member 331 separates garbage (H) such as hair adhered to the adhesive member 321 of the main brush 320 . The blade member 331 is defined on the outer circumference of the sub brush 330 .

The blade member 331 defines the outer circumference of the sub brush 330 . In other words, the sub brush 330 may be configured by connecting a plurality of blade members 331 to each other.

The blade member 331 extends in the direction in which the sub brush 330 extends, in the left-right direction in the illustrated embodiment. Each end in the direction in which the blade member 331 extends, each on the left and right sides in the illustrated embodiment, may be connected to the pinion gear 342 .

When the direction in which the blade members 331 extend, ie, the left-right direction in the illustrated embodiment, is defined as a length direction, the direction in which the blade members 331 extend toward each other may be defined as a width direction.

One end portions of the blade members 331 facing each other in the width direction may be connected to each other. In addition, the other end portions of the blade members 331 in width directions opposite to each other may define the outer circumference of the sub brush 330 .

The blade member 331 may extend to define a curved surface. In other words, the blade member 331 includes at least one bent portion in the length direction. Accordingly, the surface area of the blade member 331 may be increased to effectively separate garbage (H) such as hair adhered to the adhesive member 321 .

A plurality of blade members 331 may be provided. A plurality of blade members 331 may define corresponding secondary brushes 330a, 330b.

In other words, the blade member 331 includes a plurality of first blades defining the first sub-brush 330a. a sheet member 331a; and a plurality of second blade members 331b defining the second sub-brush 330b.

In one embodiment, wherein the sub-brush 330 includes a first sub-brush 330a; and a second sub-brush 330b, the first blade member 331a and the second blade member 331b may be arranged to engage with each other.

Specifically, the first sub-brush 330a and the second sub-brush 330b are disposed adjacent to each other.

When the first sub-brush 330a and the second sub-brush 330b rotate, the first blade member 331a may be inserted into a space disposed between the second blade members 331b. Likewise, the second blade member 331b may be inserted into a space formed between the plurality of first blade members 331a.

Therefore, the first blade member 331a and the second blade member 331b may not affect the rotation of each sub brush 330a, 330b. Accordingly, each of the sub brushes 330a, 330b is efficiently rotated, and can effectively separate garbage (H) such as hair adhered to the adhesive member 321 .

4. Describe the operation process of the nozzle part 100, 200, 300 and the cleaning robot 1 including the nozzle part 100, 200, 300 according to an embodiment of the present invention

The nozzle part 100, 200, 300 and the cleaning robot 1 including the nozzle part 100, 200, 300 according to various embodiments of the present invention can efficiently collect garbage (H), such as hair remaining in a traveling environment.

In addition, collected garbage (H) such as hair can be easily separated and accommodated in the dust container 30 even when the user does not perform an additional operation.

Hereinafter, with reference to FIGS. 13 to 15 , the collection and separation of garbage such as hair by the suction nozzle parts 100 , 200 , 300 according to various embodiments of the present invention and the cleaning robot 1 including the suction nozzle parts 100 , 200 , 300 will be described in detail. (H) process.

Referring to FIG. 13 , an example of each gear part 140 , 240 , 340 of the suction nozzle part 100 , 200 , 300 according to various embodiments of the present invention is shown. In the illustrated embodiment, it will be appreciated that a plurality of respective secondary brushes 130, 230, 330 are provided.

When the power supply part 150, 250, 350 is operated to rotate the main gear 141, 241, 341, each of the sub gears 142, 242, 342 is also rotated. At this point, it will be understood that the direction of rotation of each pinion gear 142 , 242 , 342 is in the opposite direction to that of the main gear 141 , 241 , 341 .

Therefore, the main brush 120 , 220 , 320 linked to the main gear 141 , 241 , 341 and the secondary brush 130 , 230 , 330 linked to the secondary gear 142 , 242 , 342 also rotate together.

Therefore, the garbage (H) such as hair adhering to the adhesive member 121, 221, 321 and The primary brushes 120 , 220 , 320 rotate together to get between the secondary brushes 130 , 230 , 330 . At this time, each sub-brush 130, 230, 330 includes a member for separating garbage (H) such as hair.

Therefore, garbage (H) such as hair is separated and removed from the main brush 120 , 220 , 320 . The removed garbage (H) such as hair is introduced into the dust container 30 through the inner space of the nozzle housing 50 and the inner space of the main body part 10 .

Referring to FIG. 14 , a modified example of each gear part 140 , 240 , 340 of the suction nozzle part 100 , 200 , 300 according to various embodiments of the present invention is shown. In the illustrated embodiment, it will be appreciated that each secondary brush 130, 230, 330 is provided in a single number.

When the power supply part 150, 250, 350 is operated to rotate the main gear 141, 241, 341, each of the sub gears 142, 242, 342 is also rotated. At this point, it will be understood that the direction of rotation of each pinion gear 142 , 242 , 342 is in the opposite direction to that of the main gear 141 , 241 , 341 .

Therefore, the main brush 120 , 220 , 320 linked to the main gear 141 , 241 , 341 and the secondary brush 130 , 230 , 330 linked to the secondary gear 142 , 242 , 342 also rotate together.

Accordingly, garbage (H) such as hair adhered to the adhesive member 121 , 221 , 321 rotates together with the main brush 120 , 220 , 320 to enter between the sub-brush 130 , 230 , 330 and the main brush 120 , 220 , 320 . At this time, each sub-brush 130, 230, 330 includes a member for separating garbage (H) such as hair.

Therefore, garbage (H) such as hair is separated and removed from the main brush 120 , 220 , 320 . Removal waste (H) such as hair is introduced into the dust container 30 through the inner space of the nozzle housing 50 and the inner space of the main body part 10 .

Referring to FIG. 15 , it is a conceptual diagram showing a process of collecting and separating garbage (H) such as hair by the suction nozzle part 100, 200, 300 and the cleaning robot 1 including the suction nozzle part 100, 200, 300 according to various embodiments of the present invention. .

Referring to (a) of FIG. 15 , the main brushes 120, 220, 320 and the sub-brushes 130, 230 of each suction nozzle part 100, 200, 300 in the cleaning robot 1 driven to the left side are shown on the floor surface (G). , 330.

At this time, it will be understood that the secondary brushes 130, 230, 330 rotate according to the operation of the power supply part 150, 250, 350, but at a faster speed than the main brushes 120, 220, 320 direction of rotation.

Here, before the cleaning robot (1) passes over the floor surface, garbage such as hair (H) placed on the floor surface (G).

Referring to (b) of FIG. 15 , a state in which the cleaning robot 1 is driven and garbage (H) such as hair present on the floor surface (G) is collected by the main brushes 120 , 220 , 320 is shown.

As described above, the main brush 120, 220, 320 includes the adhesive member 121, 221, 321 around its outer circumference. The bonding member 121, 221, 321 may be formed of a fibrous material having a high roughness such as felt.

As the rotation of the main brush 120, 220, 320 continues, the debris (H) such as hair stuck to the adhesive member 121, 221, 321 rotates clockwise inside the frame 110, 210, 310, that is, in the illustrated embodiment middle.

Referring to (c) of FIG. 15 , a state in which garbage (H) such as hair adhered to the adhesive member 121 , 221 , 321 is removed by each removal member 130 , 230 , 330 is shown.

In other words, by the rotation of the main brush 120 , 220 , 320 the trash (H) such as hair that has entered between the sub-brushes 130 , 230 , 330 passes through the sub-brush 130 , 230 , 330 rotating in the direction opposite to the main brush 120 Separated from the adhesive member 121 , 221 , 321 .

In the illustrated embodiment, a plurality of secondary brushes 130, 230, 330 may be provided, but as in the previous modified example, a single number of secondary brushes 130, 230, 330 may be provided. In the above embodiment, it will be understood that the attached garbage (H) such as hair enters between the main brush 120 , 220 , 320 and the sub brush 130 , 230 , 330 and is separated by the sub brush 130 , 230 , 330 .

As described above, the internal space of the nozzle housing 50 communicates with the internal space of the main body 10 and the dust container 30 through the communicating portion 53 .

Accordingly, removed garbage (H) such as hair is collected in the dust container 30 through the communication part 53 and the inner space of the main body part 10 .

As a result, the suction nozzle part 100, 200, 300 and the cleaning robot 1 including the suction nozzle part 100, 200, 300 according to an embodiment of the present invention can effectively collect garbage (such as hair) that is difficult to remove from the floor surface (G). h).

In addition, collected garbage (H) such as hair can be easily separated from the main brush 120 , 220 , 320 by the sub brush 130 , 230 , 330 and accommodated in the dust container 30 .

Also, the above process can be realized by rotating the main brush 120 , 220 , 320 and the sub brush 130 , 230 , 330 at different speeds through a single power supply part 150 , 250 , 350 .

Although the invention has been described with reference to preferred embodiments, it should be understood without departing from the Various modifications and improvements will become apparent to those skilled in the art given the concept and scope of the invention as defined by the scope of the invention.

1: Cleaning robot

10: Main body

20: Drive Department

30: Dust container

40: Sensor part

50: Nozzle housing

51: Outer shell

100,200,300: nozzle part

Claims (17)

A nozzle part including: a frame; a main brush rotatably coupled to the frame to extend in one direction; and a sub-brush located adjacent to the main brush to extend in the one direction, and is rotatably coupled to the frame with respect to the main brush, wherein the main brush includes: an adhesive member around an outer circumference of the main brush to which garbage such as hair is adhered, and the sub-brush is positioned at the rotation of the main brush a downstream side of the direction, and stick the attached garbage such as hair to the bonding member, then move a predetermined distance along an outer circumferential direction of the main brush, and then contact the sub-brush, and the main brush and the sub-brush Rotate in the opposite direction. The nozzle portion of claim 1, wherein the sub-brush defines an outer circumference of the sub-brush, and includes a sub-outer circumferential surface configured to have a roughness smaller than that of the adhesive member. The suction nozzle portion as claimed in claim 2, wherein a plurality of sub-brushes are provided, and the plurality of sub-brushes are positioned adjacent to each other, and are separated from the adhesive member when attached garbage such as hair passes between the plurality of sub-brushes . The nozzle portion of claim 1, wherein the sub-brush includes: a protruding member provided to protrude from an outer circumferential surface of the sub-brush to separate attached dirt such as hair from the adhesive member. The suction nozzle part as in claim 4, wherein a plurality of protruding members are defined, and the plurality of protruding members are spaced apart from each other and arranged in parallel along the one direction, and by arranging the plurality of protruding members in parallel along the one direction The defined plurality of rows are spaced apart from each other along a circumferential direction of the secondary brush. The suction nozzle part as claimed in claim 5, wherein for each of the rows defined by the plurality of protruding members positioned adjacent to each other, the protruding members and the space in which the protruding members are spaced apart from each other are along the side of the secondary brush Alternately arranged in a circumferential direction. The suction nozzle part of claim 5, wherein a plurality of the secondary brushes are arranged, and the plurality of secondary brushes are positioned adjacent to one another, and The protruding member provided at any one of the plurality of sub brushes is inserted into a space in which the protruding members adjacent to the other of the plurality of sub brushes are spaced apart from each other. The nozzle portion of claim 4, wherein a cross-sectional area of the protruding member is defined to decrease in a direction opposite to the outer peripheral surface of the secondary brush. Such as the nozzle part of claim item 1, wherein the secondary brush includes: The plurality of blade members extend in the one direction, have their radially inner ends connected to each other, and have their radially outer ends exposed to the outside. The nozzle part of claim 9, wherein the blade component includes: at least one bend along the one direction. Such as the nozzle part of claim item 1, further including: a main gear, connected to the main brush for rotation with the main brush; and A secondary gear is connected to the secondary brush and cooperates with the primary gear. The nozzle part of claim 11, wherein the main gear and the secondary gear include: a tooth portion in which a plurality of convex portions and a plurality of concave portions are alternately arranged along an outer circumference of the tooth portion, and The teeth of the primary gear include more protrusions and recesses than the teeth of the secondary gear. A cleaning robot, comprising: a main body; A dust container is detachably connected to the main body and defines a space therein; a nozzle housing detachably connected to the main body, an inner space of the nozzle housing communicating with the space of the dust container; and a nozzle portion rotatably accommodated in the nozzle housing and partially exposed to an exterior of the nozzle housing, Wherein the nozzle part includes: a frame, connected to the nozzle housing; a main brush rotatably coupled to the frame to extend in one direction; and a secondary brush positioned adjacent to the main brush to extend in the one direction and rotatably coupled to the frame relative to the main brush, and Where the master brush contains: an adhesive member, which surrounds an outer circumference of the main brush, with dirt such as hair adhered, and The sub-brush is located on a downstream side of the rotation direction of the main brush, and adheres attached debris such as hair to the adhesive member, then moves a predetermined distance along an outer circumferential direction of the main brush, and then comes into contact with the sub-brush, as well as The main brush and the secondary brush rotate in opposite directions. The cleaning robot of claim 13 further includes: a main gear, connected to the main brush for rotation with the main brush; a secondary gear coupled to and rotates with the secondary brush and gear coupled to the primary gear; and a power supply unit connected to the main brush and rotated to rotate the main brush, wherein the number of recesses and protrusions disposed in the primary gear is defined to be greater than the number of recesses and protrusions disposed in the secondary gear, and When the power supply unit rotates, the sub-brush rotates faster than the main brush. The cleaning robot according to claim 13, wherein the secondary brushes include: an outer circumference defining an outer circumference of the secondary brush and having a roughness less than that of the bonding member, and sets a plurality of such brushes, and the plurality of secondary brushes are positioned adjacent to one another, and When the attached garbage such as hair passes between the plurality of sub brushes, it is separated from the adhesive member. The cleaning robot of claim 13 further includes: a protruding member provided to protrude from an outer circumferential surface of the sub-brush to separate attached dirt such as hair from the adhesive member, wherein a plurality of the protruding members are defined, and the plurality of protruding members are spaced apart from each other and arranged in parallel along the one direction, and Rows defined by arranging the plurality of protruding members in parallel in the one direction are spaced apart from each other in a circumferential direction of the sub-brush. The cleaning robot of claim 13 also includes: A plurality of blade members extend in the one direction, their radially inner ends are connected to each other, and their radially outer ends are exposed to the outside, Wherein the blade member comprises at least one curved portion along the one direction.

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